Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above national median SD
Louisiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Louisiana — drawn straight from the FHWA National Bridge Inventory.
- 12,699
- Public bridges
- 36.2%
- Good condition
- 11.0%
- Poor condition
- 11.0%
- Structurally deficient
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges rated 0-4
Structurally Deficient
11.0%
1,397 bridges flagged for repair priority
4.0pp vs national avg 7.0%
Louisiana vs national bridge condition
Louisiana — Good condition share 36.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana — Structurally deficient share 36.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Louisiana (FHWA NBI)
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 323 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Louisiana on the same metric.
42
Pennsylvania
10.50% top marginal rate
38
North Dakota
10.84% top marginal rate
22
Louisiana
11.00% top marginal rate
72
Puerto Rico
11.98% top marginal rate
23
Maine
13.23% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
Layton Coco Xing
Structurally DeficientOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
Structurally DeficientOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
Structurally DeficientOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
Structurally DeficientOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
All Bridges in Louisiana
Sally Ride Ave
GoodOver: MONTE SANO BAYOU
700 FEET EAST OF VETERANS, East Baton Rouge, LA
Built 2015 Load: 43.4 t ADT: 1,350
Amelia Earhart Ave
GoodOver: MONTE SANO BAYOU
0.1 MI. E. OF VETERANS, East Baton Rouge, LA
Built 2015 Load: 43.4 t ADT: 409
Claycut Rd
GoodOver: WARD CREEK
0.6 MI. W OF LA 73, East Baton Rouge, LA
Built 2017 Load: 43.4 t ADT: 4,725
Platin Rd.
GoodOver: L'ANSE AUX PAILLES COULE
0.50 Mi N of La 1165, Evangeline, LA
Built 2010 Load: 43.4 t ADT: 13
US0090-X
GoodOver: Ground
.5 MI W OF MANHATTAN BLVD, Jefferson, LA
Built 2016 Load: 43.4 t ADT: 15,955
E. Amedee Dr.
GoodOver: SUNBEAM COULEE
0.35 MI E OF LA 3073, Lafayette, LA
Built 2015 Load: 43.4 t ADT: 383
Buddy Ellis Rd
GoodOver: Canal
.1 Mi. W. of LA 447, Livingston, LA
Built 2020 Load: 43.4 t ADT: 6,522
MLK South
GoodOver: Stalkinghead Creek
0.6 Miles S of US 165, Morehouse, LA
Built 2021 Load: 43.4 t ADT: 1,050
Robeline-Prov. Rd.
GoodOver: Coal Kiln Creek
3.10 M W of LA 117, Natchitoches, LA
Built 2020 Load: 43.4 t ADT: 80
Morrison Rd
GoodOver: GANNON CANAL
1 MILE NORTH OF I-10, Orleans, LA
Built 1999 Load: 43.4 t
I0010
GoodOver: LAKE PONTCHARTRAIN
2.6 MILES FROM BEGINNING, Orleans, LA
Built 2011 Load: 43.4 t ADT: 33,925
BRITTON RD
GoodOver: DRAIN TO CHENIERE CREEK
3.5 Mi N of LA546, Ouachita, LA
Built 2022 Load: 43.4 t ADT: 525
HERMAN DICKERSON
GoodOver: BROWN CREEK
1.6 MI S OF LA 34, Ouachita, LA
Built 2022 Load: 43.4 t ADT: 125
DIXIE CHURCH RD
GoodOver: CYPRESS BAYOU
0.19 MI S OF LA 465, Rapides, LA
Built 2022 Load: 43.4 t ADT: 80
SETLIFF RD
GoodOver: BAYOU PIERRE TRIBUTARY
2.8 Mi NW of LA 8, Rapides, LA
Built 2022 Load: 43.4 t ADT: 150
CASTOR PLUNGE RD
GoodOver: LITTLE BAYOU CLEAR
1.5 M W OF US 165, Rapides, LA
Built 2021 Load: 43.4 t ADT: 100
LA0038
GoodOver: RIVER
0.8 M E OF LA 43, St. Helena, LA
Built 2013 Load: 43.4 t ADT: 1,715
LA0038
GoodOver: DRAIN
0.51 OF A MILE EAST OF LA, St. Helena, LA
Built 2013 Load: 43.4 t ADT: 1,715
Greenwood Dr
GoodOver: CANAL
1.0 MILES SOUTH OF CARROL, St. John the Baptist, LA
Built 2011 Load: 43.4 t ADT: 500
LA3083
GoodOver: Bayou Alexandre
3.9 Mi. E. of LA 679, St. Martin, LA
Built 2020 Load: 43.4 t ADT: 1,454
Tilac Rd
GoodOver: MAGENTA CANAL
0.9 Mi. NW of LA 354, St. Martin, LA
Built 1985 Load: 43.4 t ADT: 58
LA0021
GoodOver: TCHEFUNCTE RIVER
1.85 MI. N OF I-12, St. Tammany, LA
Built 2017 Load: 43.4 t ADT: 34,242
LA0021
GoodOver: TCHEFUNCTE RIVER
2.0 MILES NORTH OF I-12 J, St. Tammany, LA
Built 2016 Load: 43.4 t ADT: 12,029
WEST 15TH AVENUE
GoodOver: MILE BRANCH
0.37 MI.W OF LA.21, St. Tammany, LA
Built 2017 Load: 43.4 t ADT: 800
US0190
GoodOver: CREEK
1.0 M SW OF LA 25, St. Tammany, LA
Built 1969 Load: 43.4 t ADT: 12,522
Vineyard Road
GoodOver: Skulls Creek
2.35 Mi. E. of La 443, Tangipahoa, LA
Built 2019 Load: 43.4 t ADT: 648
LA0028
GoodOver: GREY'S CREEK
3.06 MI. WEST OF LA 465, Vernon, LA
Built 2011 Load: 43.4 t ADT: 6,952
LA0016
GoodOver: DRAIN
2.1 M SW OF LA 25, Washington, LA
Built 1969 Load: 43.4 t ADT: 3,985
OAK ST
GoodOver: POYDRAS BAYOU
0.01 Mi W of LA 413, West Baton Rouge, LA
Built 2018 Load: 43.4 t ADT: 275
US0190
GoodOver: STREAM NO NAME
1.14 M W of LA 983, West Baton Rouge, LA
Built 1952 Load: 43.4 t ADT: 22,996
Peterson Rd
GoodOver: Claycut Creek
1.6 Mi. E. of LA 421, West Feliciana, LA
Built 2021 Load: 43.4 t ADT: 104
US0090
GoodOver: BAYOU BLANC
3.1 MI EAST OF LA 1124, Acadia, LA
Built 1993 Load: 43.5 t ADT: 6,598
LA0098
GoodOver: DRAINAGE
0.65 MI NORTH OF I-10, Acadia, LA
Built 1996 Load: 43.5 t ADT: 3,050
US0071
GoodOver: KELLY BAYOU
2.4 MI N OF JCT. LA 170, Caddo, LA
Built 2001 Load: 43.5 t ADT: 583
US0165
GoodOver: BALLARD BAYOU
6.0 MI NORTH OF LA 847, Caldwell, LA
Built 1990 Load: 43.5 t ADT: 11,282
LA0585
GoodOver: BAYOU MACON
2.18 MI E of US 65, East Carroll, LA
Built 2001 Load: 43.5 t ADT: 372
LA0010
GoodOver: SANDY CK.
1.5 M E of LA 10&LA 951, East Feliciana, LA
Built 1976 Load: 43.5 t ADT: 3,790
LA0013
GoodOver: BAYOU
2.76M NORTH OF LA 10, Evangeline, LA
Built 1994 Load: 43.5 t ADT: 6,976
LA0013
GoodOver: BAYOU
2.9M NORTH OF LA 10, Evangeline, LA
Built 1994 Load: 43.5 t ADT: 6,976
US0425
GoodOver: DEER CREEK
1.80 M N of LA 913, Franklin, LA
Built 1999 Load: 43.5 t ADT: 4,592
US0425
GoodOver: DEER CREEK
2.3 MI SOUTH OF LA 562, Franklin, LA
Built 1999 Load: 43.5 t ADT: 4,500
LA0132
GoodOver: BIG CREEK
3.0 MI WEST OF LA 857, Franklin, LA
Built 1975 Load: 43.5 t ADT: 703
US0167
GoodOver: BIG CREEK
1.07 MI. SOUTH OF LA 123, Grant, LA
Built 1988 Load: 43.5 t ADT: 11,712
LA0030
GoodOver: BAYOU BRAUD
LA0030, Iberville, LA
Built 1968 Load: 43.5 t ADT: 8,090
US0090
GoodOver: EAST LACASSINE BAYOU
2.22 MI EAST OF LA 1131, Jefferson Davis, LA
Built 1992 Load: 43.5 t ADT: 4,262
LA0342
GoodOver: INDIAN CREEK
0.3 MI WEST OF LA 343, Lafayette, LA
Built 1996 Load: 43.5 t ADT: 1,309
Ridge Rd
GoodOver: COULEE ILE DES CANNES
2.0 MI EAST OF LA 342, Lafayette, LA
Built 1996 Load: 43.5 t ADT: 14,524
LA0001
GoodOver: THERIOT CANAL
3.3M N OF LA 3198, Lafourche, LA
Built 1991 Load: 43.5 t ADT: 8,897
LA0309
GoodOver: BUBBLING BAYOU
2.5 MI NORTH OF US 90, Lafourche, LA
Built 1995 Load: 43.5 t ADT: 4,583
LA0309
GoodOver: PHILLIPS CANAL
4.0 MI NORTH OF US 90, Lafourche, LA
Built 1994 Load: 43.5 t ADT: 4,583
Showing 10,401-10,450 of 12,699 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |